Christians – 2.23 billion people  (33.32% of the world’s population)

Muslims – 1.41 billion people (21.01%)

Hindus – 889 million people (13.26%)

Buddhists – 392 million people (5.84%)

Sikhs – 23.5 million people (0.35%)

Jews – 15.4 million people (0.23%)

Baha’is – 8.05 million people (0.12%)

Other Religions – 790 million people (11.78%)

Non-Religious – 789 million people (11.77%)

Atheists – 156 million people (2.32%)

* These numbers are based on a world population of 6,706,993,152 given by the CIA World Factbook  – https://www.cia.gov/library/publications/the-world-factbook/.